Agilent/Keysight 66311A DC Power Supply

The Keysight 66311A is a single-output DC power supply engineered for dynamic testing of mobile communications devices. It delivers precise voltage and current sourcing with fast transient response, critical for battery-powered equipment under variable load conditions. The unit excels at simulating real-world battery behavior while minimizing test interruptions from voltage sag, making it essential for R&D, manufacturing, and service environments.

Technical Specifications

• Voltage range: 0 to 15 V


• Current output: 0 to 3 A continuous


• Peak current sourcing: Up to 5 A for up to 7 ms


• Current sinking: Up to 2.8 A (2 A @ 7.5 V)


• Maximum power: 45 W Programming & Measurement Accuracy


• Voltage programming resolution: 3.75 mV


• Current programming resolution: 0.67 mA


• Voltage programming accuracy: ±17.5 mV


• Voltage measurement accuracy: ±(0.03% + 5 mV)


• Current measurement accuracy: ±(0.2% + 0.5 mA) from 20 mA to rated current; ±(0.2% + 1.1 mA) for negative currents; ±(0.1% + 2.5 µA) in the ±20 mA range


• Output noise and ripple: 6 mV peak-to-peak


• Transient response: Less than 35 µs recovery within 20 mV following 0.1 to 1.5 A load steps (high mode compensation, 5 to 12,000 µF loads)

Key Features

• Precision microamp measurement enables accurate "sleep mode" power consumption characterization


• Dynamic current pulse measurement for battery load profiling


• Bidirectional operation supports testing of built-in battery chargers through current sinking


• Fast transient recovery optimizes manufacturing throughput by reducing test cycle interruptions


• Precise voltage and current sourcing for stable, repeatable battery simulation

Typical Applications

• Mobile communications device development and validation


• Battery behavior simulation in production testing


• Built-in charger verification and characterization


• Low-power sleep-mode current measurement


• Dynamic load response analysis

Compatibility & Integration The 66311A interfaces with standard test automation systems for mobile communications manufacturing and R&D environments.